As the federal government readies the third iteration of Einstein, privacy concerns over the intrusion detection system were voiced at a Senate hearing on Tuesday.

Philip Reitinger, Department of Homeland Security deputy undersecretary for the National Protection and Programs Directorate, told the Senate Committee on the Judiciary’s Subcommittee on Terrorism and Homeland Security that DHS envisions deploying Einstein 3 as an intrusion prevention system.

“This more robust version of Einstein would provide the federal government with an improved early warning and an enhanced situational awareness; the ability to automatically detect malicious activity; and the capability to prevent malicious intrusions before harm is done,” Reitinger said.

But Gregory Nojeim, senior counsel and director of Project Freedom, Security and Technology at the Center for Democracy and Technology, cited press accounts that Einstein 3 would rely on pre-defined signatures of malicious code that might contain personally identified information, and threaten the privacy of law-abiding citizens.

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